Peppermint essential oils can be toxic and even fatal to dogs if pet parents choose poor-quality products or use the products incorrectly. For this reason, we do not recommend using peppermint oil on your dog or giving your dog peppermint oil without speaking to your veterinarian first.

According to the American Society for the Prevention of Cruelty to Animals (ASPCA), peppermint oil contains compounds that are toxic to dogs, such as menthol and pulegone. These compounds can cause symptoms such as vomiting, diarrhea, and difficulty breathing in dogs.

Peppermint oil exposure can cause toxicity and result in clinical signs like weakness, lethargy, vomiting, and diarrhea. If a dog is exposed to a large amount of peppermint oil, it can even be fatal.

Yes, peppermint oil can be dangerous to dogs when ingested, inhaled, or applied to their skin. Peppermint is also on PetMDs list of toxic essential for dogs, meaning it should be completely avoided.

Peppermint is not OK for dogs, as the plant oils can sit on the surface of the leaves. Because of this, your dog might experience irritation or symptoms of intolerance by simply touching a peppermint plant or peppermint product — they don’t necessarily have to eat it to be affected.